A kollel is an institute for full-time, advanced study of the Talmud and rabbinic literature. Like a yeshiva, a kollel features shiurim (lectures) and learning sedarim (sessions); unlike most yeshivot, the student body of a kollel typically consists mostly of married men. A kollel generally pays a regular monthly stipend to its members.

Torah study is the study of the Torah, Hebrew Bible, Talmud, responsa, rabbinic literature, and similar works, all of which are Judaism's religious texts. According to Rabbinic Judaism, the study is done for the purpose of the mitzvah ("commandment") of Torah study itself.